Inner or slip sole.



L. CHAMBERLAIN. INNER 0R SLIP SOLE. Arrtrouxo'n rmm In a, 1912.

1,050,801 Pa tentedJa1L21,1913.

min/6768196 I nven to r 'Leonard "(Chamberlain wwm W W LEONARD W. GHAMBERLAIN, 9F BQEl'I'ON, MASSACHUSETTS.

INNER OR SLIP SOLE.

Specification of Letters latent. Patented Jan, 21, 1913.

Application filed May 8, 1912. Serial No. 695,867.

To all whom it may concern:

Be it known that I, LEONARD W. Crranr BERLAIN, a citizen of the United States, and a resident of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Inner or Slip Soles, of which the-following description, in

connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to inner or slip soles for boots and shoes.

Attempts have heretofore been made to cushion the foot in walking as by providing an outer rubber sole or heel, and also by providing cushion insoles or inncrsoles of certain types. Many persons, however, object to rubber soles and heels, not only because they increase the liability of slipping but for other reasons. Cushioned innersoles or slip or removable soles have not been found generally acceptable, particularly when the latter are made of a soft or felt like material, as the same tends to heat the foot.

By my invention I aim to overcome these and other objections.

I have herein selected for illustration one form or embodiment thereof, and while the same is specifically described, it is to be understood that I am in no wise limited to the form shown, but that the same may be widely varied within the spirit and scope of the invention.

In the drawings: Figure 1 is a view of the under face of one form of an inner orremovable sole member or slip sole constructed in accordance with my invention; Fig. 2

bottom of the foot.

is an edge elevation thereof, inverted; and Fig. 3 is a plan vieyy of the sole member.

In the drawing, wherein like characters of reference indicate like parts, what is herein termed the upper piece is indicated at 1, the same being preferably a flat strip of suitable material such as rubber, woven fabric, rubber fabric or any other material, adapted to thepurpose. The upper piece is preferably shaped to conform to the entire To one surface of the upper piece is applied as by attaching the same in any desired manner, as by vulcanization. a cushion 2 of suitable material, preferably of rubber, it being shown as ooextensive witli the upper piece. To render the cushion very resilient and yielding, it is preferably corrugated or undulated as shown at 3 throughout the extent thereof,

the said corrugations being of a general tabulated character and preferably molded or integral with the cushion 2 which is more resilient than the upper piece 1. Thus the cushion serves to absorb the jar encountered by the foot of the wearer in walking and particularly in the heel. In the disclosed and preferred embodiment of the invention the corrugations or undulations are shown as extending transversely of the foot in a parallel direction.

In the preferred form of the invention there is presented a succession of chambers within which air is contained, adding y the described construction there is afiorded an air circulation, the air being, as it were, pumped from the channels as pressure is brought to bear upon the sole of the shoe, and. permitted to return as the foot is lifted from the ground- The upper piece 1 presents a fiat surface to the foot and acts as a backing to corrugated cushion 2.

More than one cushion member may be employed in a sole. In Fig. 2, a second cushion member is shown at 4, it being represented as applied above the first cushion member and at the heel only thereof. Such second cushion. may, of course, be applied either above or beneath the first cushion, and may be of any desired extent, though it is preferably employed. at the heel only. It is preferably corrugated or-undulated, and such corrugations are shown as conforming in character and extent to those of the first cushion member though this is not essential. If desired, the corrugations of the second cushion member may be parallel with those of the first cushion, and may or may not break joints therewith. While the second cushion member is shown as having an upper piece 5, the same need not be employed. A piece of any desired material, preferably smooth, may be placed under and, if desired,

secured to the sole member, and may be 00-,

extensive therewith, or with such portion thereof as may be desired.

It is apparent that a sole member constructed in accordance with my invention presents a resilient and yielding cushion,

and that the same is very effective in absorbing the jar encountered in walking. Moreover, the circulation of air keeps the foot cool, and the moisture of the foot is kept from contact with the shoe.

Having thus described one illustrative cmbodiment of my invention, I desire it to be understood that althousiih specific terms are employed, they are used in a generic and descriptive sense and not for purposes of limitation, the scope of the invention being set forth in the following claims.

Claims.

1. A slip sole adapted to be freely inserted in and withdrawn from aboot or shoe, consisting of a highly resilient sheet formed with tabulated, parallel readily compressible, open-ended corrugations to be placed against the shoe sole, and an overlying, less resilient substantially flat member secured thereto throughout the major 'portion of its area.

2. A slip sole adapted to be freely inserted in and withdrmvn from a" hoot or shoe, consistingof a highly resilient sheet of substantially the whole length and width of the foot, and formed with tubulated, readily compressible, parallel, open-ended corrugations to he placed against the shoe sole, and a substantially equal sized overlying, less resilient, substantially flat member secured thereto throughout the major. portion of its area 3. A slip sole adapted to cover substantially the entire bottom of a shoe on the interior thereof consisting of a flexible sheet formed to present a smooth upper surface and av lower surface having transverse hollow open-ended corrugations throughout the entire length and width thereof, the heel portion of said sheet having a sheet of substantially like s ructure attached to the upper surface thereof:

In testimony whereof, I have signed my name to this specification in the presence of two subscribingwitnesses.

LEONARD W. CHAMBERLAIN. I Witnesses:

Invme U. TOWNSEND,

ROBERT H. KAMM ER. 

